Locomotive crane



March 25, 1930. A. E. HoLcoMB LOCOMOTIVE CRNE Filed Feb. 2. 11922 11 sheets-sheet March 25,y 1930. A. E. HoLcoMB LOCOMOTIVE CRANE 11 sheets-Sheet '2 Filed Feb. 2. 1922' vMarch 25, 1930.

A. E. HOLCOMB LOCOMOTIVE CRANE Filed Feb. 2. 1922 11 SheebS--Sheety March 25, 1930. A. E. HoLcoMB LOCOMOTIVE CRANE 11 Sheets-SheeI "4 Filed Feb, 2. 1922 arto: www' March 25, 1930. A. E. HoLcoMB LocoMoTIvE CRANE 11 Sheetsi-S-heet 6 Filed Feb. 2. 1922 March25,193o. A. E'HOLCOMB 1,751,633

LOCOMOTIVE CRANE Filed Feb. 2. 1922 vlll. Sheets-Sheet. '7

March 25, 1930.

l I l A. E. HoLcoMB 1,751,633

.LOCOMOTIVE CRANE Filed webA 2. l1922 11 sheets-sheet 9 i March 25, '1930.

LOCOMOTIVE 'CRANE Filed Feb. 2.' 1922 1 1 Sheets-Sheet i l1.

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Patented Mar. 1930 UNITEDsTATEs PATENT OFFICE ALFHEUS E. HOLCOMB, OEMILWAUKEE, WISCONSIN, AssIGNoa TOKOEHEING COM- PANY, OE MILWAUKEE, WISCONSIN, A CORPORATION LOCOMOTIVE CRANE i Application filed February 2, 1922. Serial No. 533,633.4

The primary purposel of my invention has been to evolve certain important improvements inthe design of cranes and excavators of the portable class, and such as are common-y ly used in connection'with clamshell, orangepeel and dragline buckets, or hoisting means comprising special blocks and tackle or electro-magnets.

An appreciation of the nature and advantagesl of the improvements develope-d by me, and hereinafter fully described in detail and claimed, Vvwill be best had after an understanding of certain methods of operation of cranes of the class above referred to, in the performance of di'erent kinds of Work. i

It is known in sthe art that a crane equipped for the operation ofa clamshell bucket utilizes an arrangement of operating cables for the bucket, adapted t'o travel at a high speed.

.To en ahlesuch a crane to operate a dragline or dragscraper bucket, it is commonly necessary to reconstruct the crane to a certain'extent, becausethe cable drive in the dragline Work must be such as to give a slow speed to the pulling in or dragline; likewise a different -kind of cable isutilized. The reconstruction above mentioned involves the removal of one of the cable drums and certain operating gearing and the substitution for them of a different drum and train of gearing. This is a time consuming and expensive job and renders the crane inactive- While the substitution is being made, thereby creating considerable lossin this respect additionally. y

Anv important object of my invention hereof has fbeen to eliminate the disadvantages at present arising in converting a crane equipped for clamshell or similar work into one adapted for 'dragline or similar Work, and I- have accomplished the desired result 'in a lWay eliminating entirely the reconstruction Of the drum features .of the crane. Inpractice lf.

have designed a special drive for the crane drums by which the operating cables of the different types of buckets are controlled and this drive includesa` variable speed gearing adapted to operate the cable 'drums 'so'tl'lat WhenI am using a clamshell or like bucket I am enabled to drive the drums at the requisite high speed, vimparting afcorresponding" high y a high speed clutch used for the higher speed Work, and a dragline cable and bucket are substituted for the clamshell cable and bucket arrangements. The construction of the crane is in no Way changed in the above 'conversion operation. A reversal'of the expeydients above outlined is resorted to in converting the crane from -dragline to clamshell Work, or in other W-ords changingfrom slow speed bucket operations to high speed bucket operations, the different'kinds of which operations arevvell known in the art. The economy of time and money'incident to the conversion method above described is self eviydent as respects both the proposition of construction and the ability to maintain a sub- I stantially continuous use of the crane itself. In carrying out the above accomplishment of my invention, I' obtain a special additional function in the use of variable speed gearing, and controls therefor, by which I may employ my crane of fixed design for both high speed and low speed Work. t There are certainA known operations of cranes, primarily hoistingoperations incident to bucket actuation, 4and hoisting Work generally, 1n

Which it becomes desirable to quickly and easily shiftd from high speed to low speed, or vice versa, in the operation of a hoisting'Y cable and' Without making necessary, as is true today, the leading of the cables or lines through a multiple part block with incident expense and increased delay. An instance of this is the utilization of slow speed instead of high' speed for the hoisting cable, g for the setting of marblecolumns, or steel- Work in process of fabrication;- while the' -high speedwould be employed for clamshell or similar Work, and in pile driving. The high s eed drive'of the cable is especially `valuab c ior catchnigthel hammer on the rebundgtfter dropping, in plle driving operationsffdlnder conditions such as these it will be seen that mere operation of the high speed clutch or the low clutch to obtainthe desired speed on'the. drive of the cablemay be resorted to with consequent increase in eiciency and utility of the crane in rforming different operations of the class )ust discussed;

'lis

Another new and important feature o'f my invention resides in utilizing the. driving mechanism for my hoisting drums of the crane as the means for driving the=traction driving mechanism of the inachine, the latter performing the usual purpose of propulsionof the crane in its work, and from place to place.- More specifically speaking and explanatory of the foregoing, I utilize the novel expedient of combining the constructions and functions-of the 4variable. speed gearing'by which the cable drums of the crane are operations, believed to be broadly new in theart,

but the mode of combining the variable speed j driving means for the cable vdrums with the traction driving means is also an entirely vnovel expedient. in crane construction, and

in view ofthe large importance of the teconomies effected by the features offconstruction just mentioned, I do not wish to be limited wholly to the particular specific. em.-

bodiments of these phases of my; invention' as Vpresented hereinafter. l

In eifect, to a certain extent, the variable isp'eed gearing as used by mein conjunction with the; cable drum o ations may be characterized as. triplein its functions, owing to thedierent .ways in whichthe said gearing is but I wish it understood that the individualgfunction's of this gearing are belie'ved tube. novel individually considered,` 'as wellms eombinatively viewed. Y Y Y `Another nevelfeatiire ofv my crane construction isV the; utilisationl of suitable 'clutch meansor an equivdent control bywhich I am able. tojdiscontinue'noperation' of the cableand-itheir rintghwhen the: beinpropell alonge road at A'relatively hg :speed for purposeof transcrane isY it from one placet'oY another. A In e employment of cranes of the usual largelymarketed today, where friction clutc es are employed .for-making con'- between certain drivingparts, much d xculty is 'experienced owing to the' fact that the frictionhaiid o`f the clutch ordinarily tends to pullthe drum face laterally creating rapid wear between the shaft and the bushing in the drum, which requires frequent replacements involving dismantling vand re-assembling of a considerable portion ofthe machinery. I have designed a special type of friction clutch for mycrane and doing away with the diiiiculty above referred to, by causing an equalization of the frictiont forces which act upon the drum thus doing away with the lateral pressure thereon causing the undue wear described. I thus retain all the advantages of the old type of band frictions while eliminating the objections outlined above.l f

Also shown in the crane construction hereinafter set forth, is a special form of canopy.

or roof involving a door automatically raised when the boom of the crane is peaked in to an extent causing it to move'within the area of the space occupied by the roof.A The novel features have to do with means to raise the door asthe'boom approaches a vertical posif tion and positively hold the door against being blown over on twisted and to positively restore thevdoor to its `downward or closing position when the boom islowered.

There are also involved in my invention certain detailedfeatur'es of my machine having'novelty of special merit the art of crane development, and these features will be presented more clearly hereinafter by detailedvdescription and shownin ythe accompanying drawings, in which: L Figure 1 is aside elevation of a crane' embodying the essential features of my invention, boom and cables broken away.

` Figure 2 is a top plan view showing more particularly the power plant, drive gearing, cable drums/and clutches forming the maehineisy ofthe crane, and viewedas if the housing parts thereof were removed, the.v

boom being broken'away.

Figure 3 is a view of the boom and cable arrangements for clamshell worki Figure 3A is a view of a modication showing the arrangement of the cables when the,

crane is adapted for dragline work.'

A Figure 4 is a sectional view of the jackshaft and the parts carried thereby including clutches, gears, etc. Y

Figures 5 and 6 are side and sectional views respectively of one of the drum friction clutches. 9 i

Figure 6Ais aside view Vof the spider of the clutch. Y .Figure 7 or'engme izlijaekshaf't. V A

Figure 8 .is a sectional view of the traction reverse. shaftV and'parts carriedthereby.

Figure 9 is a sectional view of the traction drive parts throughv the center pin ofthe crane turntable.. j

1clutches as lshown `carried Zby is a side view offone of the swing'- Figure 10 is a bottom plan View of the drive gearing for the multiplane traction devices, the endless multiplanes thus being omitted and the manner in which the multiplane units are geared and the drive gearing therefor being clearly shown.'

Figure l1 is a view in elevation of the parts of Figure 10.

Figure 12 is a sectional View taken through the variable speed gear devices directly operating the multiplane traction units.

Figure 13y is a sectional view of the boom hoist countershaft and parts thereon.

Figure 14 is a sectional View of the boom hoist'shaft and parts thereon.

Referring to the drawings it is noted lthat my crane comprises largely certain fixed fea.-

-tures of crane design in that I utilize the customary traction. frame or truck -upon which is mounted a turntable thatcarries the power plant and general operating mechanism including gearing-and cable Winding drums, etc. At one end of the turntable is carried the pivoted boom, as customary, and

the particular type of bucket or hoisting apparatus, which may include clamshell, orangepeel, dragline, and like buckets, a magnet, or hoisting tackle," connected with the boom in much the usual Way, with some moditication to be later presented. l

The turntable is supported to rotate upon the traction frame or truck, in which is mounted certain variable speed gearing by which full length iuultiplane traction unit-s are operated through gearing leading to the power plant-on the turntable. The variable speed gearing aforesaid of course' 4forms a part of the propel-ling mechanism forthe crane by which the latter is fed to "its Work, so to speak, or moved from place toi place, as occasion requires. l

In the drawings the turntable is designated A the boom B the supporting multiplanes C and the/clamshell, bucket D. The dragline bucket illustrated in Figure 3A is desiz3 :lated E and the turntable support F. (see Figure 1) the latter supporting the turntable 0n the propelling or traction frame shown at G. As the drives for operating the boom. and the various buckets, as` well as the propulsion means for the machine are taken-vof of the motor or engine, it. will be desirable to first describe the-power mechanism and gearbucket and other cables for the various hoisting or excavating operations are actuated..

Power plant ami drive mechanisms on tatie y The terms left and right hand sides of the machine will be used' viewing the boom end of the machine as its `front end and assuming that the operator is looking toward the turnboom andstanding on the turntable A. A The 7l engine or -motor H may be of any suitable type and the crank or engine shaft 1 thereof is equipped with fa pinion A which meshes with an idler gear Bin mesh with a drivengear C at the left hand end of the jackshaft 3 which is shown best in Figure 4 of the drawings. The' gear C is carried by a sleeve C equipped with a. friction clutch 20, and said sleeve revolves Without transmitting power except when the clutch 20 isthrown intqen-l gagement. 'i

. As above premised I have designed a special form of friction clutch for my machine and this form is used in practically all places where a friction clutch is described as em- 'practical embodiment of the various novel principles of myconstruction are concerned, the clutch itself being a separa-te and distinct invention which will be described later in detail.

Throwing of thel clutchQO into engagement Will transmit movement ofthe gearC to the shaft 3 inan evident manner and different 100 parts of the machinery may be operated from 'the shaft 3.

This power is taken from the shaft 3 and transmitted in one direction through another clutch 21 to the .bevel driving gear Uon shaft 105 3, said gear meshing with a bevel driven gear Y fixed to the upper extremity of the vertical shaft 16. Motion is transmitted in an opposite direction from the shaft 3 through a clutch 22 corresponding with clutch 21, to a lic bevel gearv Von the opposite 'side of the driven gear V' carriedby the shaft 16. The L clutches 2 1 and 22 are' used to operate the shaft 16 in opposite directions and said shaft carries the horizontal driving gear X engag- 11:;

ing a horizontal driven gear Y, as seen in Figure 9. The gear Y is keyed to a vertical shaft 17 on the bottom frame of the turntable, Which shaft 17 has secured to its lower extremity the driving pinion Zv engaging the bull gear J the last gear being formed on the track and rack-member F which is sup-v ported upon the base or traction unit of the crane. Rollers K are interposed between the bottom of the turntable and the trackand -1-`5 the .upper surface ofthe member-F. 13a

i 'lol eo ployed. However, I do not Wish to be limited \to any peculiar form of clutch, so far as the It observed from the foregoing that the shaft 1l? may be rotated Ain either of oppo-l site directions in order to rotate the crane in one direction or the other dependent uponJ the control of the -clutches 21 and 22.

Referring now to Figures 13 to 15 inclusive, the devices vfor operatingthe boom for peaking the point thereof'in and out, orraisthe boom hoisting drum shaft 15 which is 1n or lowering the boom respectively are shown. The 'said parts involve the use of three shafts, a shaft 13 located 4below the jackshaft 3 and having'a gear, Lf arran ed to' mesh with the gear D carried by the eft end portion of the' jackshaft-3.' The gear L is Xed to a sleeve of a frictiomclutch 27 carried by the Jleft endportion of the shaft 13 and by operating the clutch 27 to connect gearL and the shaft 13 motion will be transmitted from shaft 13 through a bevel gearl3 thereon to a bevel gear 14ona wormshaft 14 which leads rearwardly from the shaft 13 at right angles thereto. The worm 14 Von the shaft 14 engages with a worm gear 15 onl located below the enginelH" andwhich is equipped with two ydrums designated 15B. and 15" A and located near opposite ends of the shaft 15. From the drums 15 'and 15P lead v off the hoisting cables for-'the boom B the after which they lead back through an equal- 1 Themain hoiting drums are located near .said cables extending over sheave at the top of the frame on the turntable thence around sheaves 51 'at'the point of the boom izing sheave l52 mounted on the shackle 53. at

3'5` the top of the frame.'w The peaking in andv ut ofthe .boom by subs'tantiallythe above means awell known operation.

H z'gz. mi low speed-drives for hoisting and readme #the frontend of the car as usual are 40.-and 41. It is proposed to drive tllliele at high and low speeds, and the g left bindend of the Yjackshaft 3 carries the high'speeddriving gear D Ereviousl de# speed drive willfrst be described. The

scribed-ascooperatmgwith e'gear of the boom hoisting)drumapparatus. This 'h igh speedgear meshes with the hi h V`28is1ada'pted to connect the gear E -with the shftf4. In asimilar way the shaft 3 carries on its right handend a slpw speed 'driving 28 aforesaid. .Ai slow speed driven ear gear-F adaptedjto be connectedwith the shaft 3 by. a clutch 30. similar to the clutch `or any surtablesclutch. As seen in Figure 8 the G has. anextended hub the A hoisting driving' 'gear AA, thelattermeshvE'which is carried. by t eco'untershaft 4 located in-advance ofthe jack- `shaft 3, see Figures 1, 4 and 8. A jaw clutch in with a hasta driviag gear AB which Likewise power is adapted to be transmitted from the shaft 11 to a gear AC keyed thereon and arrange in meshing relation with gear carried by the shaft 12, (see Figure 16), a friction clutch 26 being provided intermediate the shaft 12 and the drag drum 41 whichis located below 'and somewhat in advance ofnthe hoisting drum; The clutch 26 when operatedl will operatively connect the shaft 12 with the drum 41 in an evident manner and similar to the operation of clutch 25 and the drum 40. 'f

Of course, if the operator throws1 out the clutch v30 and the clutch -28 is thrown in the hoisting drum 40 will' be operated at high speed suitable for certain operations of the:

crane. A reversing of the action of'said clutches, will causethe drum to'be actuated at slow speed. The clutch 29 might be dispensed with, its primary purpose being to enable the drive 'from the Ycounter-shaft 4 to the drum shaft 11 to be entirely discontinued so that the drum shafts will not-be in operation, alon with their propelling gearing, if

desired, w en the crane is 'traveling from place toplaceand the hoistingfmechanism is not in use.

' tainable by the operation of the clutch 28 and driving of the shaft 1l through the gear VE. If some special operations witli hoisting tackle are required to be performed by the crane, it is clear .that a lower speed or drive Under operating conditions if the crane is ofthe-hoisting cables may be obtained by A discontinuing' the drive Afrom the gear E and utilizing that Jfrom thegearF, involving a y mere shlfting ofthe clutch '30 in thezmanner above'set' forth. Thisv slow drive isthe one' 'suggested as very useful in column setting or placing of steel members in the fabricatlon of steel/"construction, building of the crane is required in order and obviously no rg.

to shift 'from one class of operation, sueltas clamshell work, 'to the slow speed hoisting Work justmentioned.

.Where a conversion of the' crane from" clamshell-work to dragline workis required,

intheusual type of machine the slow speed. necessary foi' the dragline wo'rkA necessitates' that a rebuilding of the -cranebe attended G toinvolving drum and gearing replacements well known to thosev versed in the art, and

the cable leading from `the top of the bucket f point' on the boom and power mechanism of the machine is changed'to a two part linewith a block, the two part line involving greater wear on the hoisting. cable and the In the presentdesign of variable speed drivel mechanism for the power drums, the simple expedient of shifting from high speed to 'low speed driving of the drums already in use is resorted to, the different types of bucket and cable equipment being capable of use in connection with said drums and being largely the conventional equipment at present universally employed.

My two speed gearing is novel in its use for crane purposes, to decrease the speed and increase the pull on the line for both drums and obviously enables -the use of my crane in a very flexible way so far as adaptations enabling it to do different kinds of work are concerned. Thus far of course I have not treated the combination of the variable speed drive gearing for the said drums 40 and 41 with the propelling mechanism of the machine and by which combination cert-ain new and novel results are achieved in crane operation.

Ora/ne propulsion means vsaidvariablespeed gears in conjunction with the drivegearing of the traction means whereby to operate the latter at different speeds. To transmit the power in one directionfrom the countershaft 4 to the propulsion ordrive `gearing of the traction mechanism the shaft 4 is equipped with the-bevel agears Hand I meshing with a bevel gear J mounted upon a longitudinal propelling shaft 5 extending forwardly from the shaft 4 at right angles thereto. On its front end'the shaft 5 carries a bevel gear Kmeshing with a bevel gear L fixed to the upper end of` a vertical shaft 6 which passesthrough the center pin M of the circular track member J. At its lower end -the shaft 6 has a bevel gear M meshing with a corresponding gear N on a horizontal shaft 7v which ,extends rearwardly from the lcenter pin M` and is equipped with a bevel gear O arranged to engage a bevel drlven propelling gear P (see Figure 11) on the horizontal transversel shaftsS and T journalled in the frame G of the traction support. From the shafts S and'T motion is adapted to'be transmitted by ltwo speed gearing to the axlel shafts/10, being`the axle shafts of the two multiplanes Nj", these multiplanes compris- A ing units each composed of a frame having a multiplane or endless' traction device mounted thereon by means of tumblers AO and supporting and bearing rollers P. As shown best in Figure 10, which is a bottom plan view of the traction support for the crane, the gear P is keyed to a sleeve Q, of the spur gear R loosely mounted on the aligned shafts S and T. The gear-R is in engagement with a reduction gear U supported on an adjacent countershaft V, see Figures 11 and 12. A further reduction of the speed is obtained by using the additional reducing gears W and X which are keyed on the opposite ends of the shaft V. The gears W and X are in mesh with gears Y andZ respectively, the latter operating loosely on the shafts S and T respectively. Power is transmitted to the right handv multiplane through the gear AX (see Figure 10) on the outer end 'of the shaft S, the said gear AX meshing with a gear BX on-the inner end of the axle of the said left hand multiplane. In a similar manner power is transmitted to the other multiplane N by means of a gear CX adapted to mesh with a gear DX on the inner end of the drive shaft of the last mentioned multiplane, see Figure 11. `Certain clutches, preferably of the jaw type, are utilized as common in variable s'peed mechanisms for shifting to obtain the different speeds available in the traction driving mechanism just referred to. Thus referring particularly to Figures 10 to 12, the jaw clutch EX is shifted so that it engages the bevel gear P in order that high speed may be transmitted to the right hand multiplane N through the shaft S. If the clutch member EX is shifted to engage the gear Y a reduction of the speed is obtained because the power is transmitted from the gear R to the gear U, to the gear W, then to the gear Y and through the gears AX and BX to the said right hand multiplane which then travels at slower speed witha greater pulling power for obvious reasons. If it is desired that the opposite or left hand multiplane be driven at high speed, jaw clutch member FX is engaged with the gear Rf and the drive -is at highpspeed through the gears CX and DX driven by shaftT to that particular multiplane. If, however, the clutchv FX is engaged vwith vgearl Z the drive is through the gea-rs R U X and Z at a reducedspeed and with greater pulling power, the power being transmitted to the multi planes thru the gears CX and DX. If'the clutches FX and EX are simultaneously engaged with the gears R and P'respectively, the multiplanes will travel forwardly o'r rearwardly at high speed, the reversal being accomplished ofcourse by thev control lof the clutches 23 and 24. If, however, the clutches FX and EX are moved in opposite directions and simultaneously engaged 4with the gears Z and Y respectively, the two multiplanes will travel at lowspeed, and in either of reverse ,directions dependent uri-(Im whether the drive is taken .from the gear orthe gear I.'

For turningor steering purposes other combinative actions'of the clutches may be used. v- Thus for instanceV if the clutchFXis engaged with the gear R and the clutch EX with its adjacent gear Y'the left hand mul-- tiplaneh will travel" at high speed and the right-hand multiplane at slow speed permit-- ting of a' steering operation to the right.. Likewise if the reverse arrangement is had, respecting the clutches, andl the clutch FX is engaged withthe gear Z while the clutch `EX is engaged with the gear P the multiplanes will have imparted thereto different speeds resulting' in the turning of the machine to the left on a definite radius bf curvature and at a predetermined speed.

It will be evident that if the mechanism just referredto is such as to produce two different speeds, and is driven from the jackshaft 4 which is adapted to be operated at different speeds, 'and the gear ratios for the severalspeeds are different, a four speed control ofthe traction multiplanes N is ob tained. Should any of the gear ratios of the variable speeds in the lower traction driving mechanismV synchronize with either one of the speed ratios'of the upper variable speed gearing for the drums 40 and 41, a three speed control for the traction mechanism belowr would be had. The above matter is of course be readily predetermined in an obvious manner. My invention contemplates the combi-- nation of theA upper variable speed gearing for driving the hoisting drums, or hoisting and dragdrums according as their functions may be, dependent upon the particular work, with either single or multiple] speed drive gearing in the traction mechanism of the supporting traction unit for thel crane.

Additionally my' invention resides inthe broader phase of combining the traction mechanism in such a way that it has-a driven relation in respect to the driving instrumentalities for the hoisting drums, for there are many advantagesjor this arrangement aside from the variable speedsobtainable.

'Roof door for car' p I The cab A of my crane is equipped vwith a door GX, seen best in lFigure 1, and Figlures'l? and 18, said d oor being hinged at its rear end t the top ofthe cab in an evident manner. `7 is door GX isprovided in order that the boom B may be peaked in so as to approach a vertical position, at- 4which time the boom hoisting cables lift-thedoor GX so that'there willbe no interference between the topof-the cab .and the boom operating` cables incident to the foregoing action of the boom. The'lsliackle 5 3 about which a portionofthe booni hoistingcable HX'passes is 'provided with .brackets 54 projecting therefrom and having attheir upper ends rollers 55. The rollers 55 operate inthe grooves'or tracks 0f .avances channeled runways 56, one of which is pro;

vided on the under side ofthe door GX near each side edge-of the latter.` Itwill be appar- 'ent that the dooqr is raised by the hoisting or peakingin of the boom causing the rollers to operate in the runways 56 thereby provid Y ning in reality anti-friction bearings between:

doorbeing blown over or twisted out 'of shape by the wind blowing against its' lower surface isavoided. It is also n ovel to utilize an actuating means between thedoor GX and the shackle 53, an advantageous arrangement Y which will be self evident. Y

@able awangeme'rbts i The cable arrangements are illustrated particularly in Figures l and 3 of the drawings, those of'Figure 1 being largely as conventional in -clamshell bucket equipment for cranes. The boom hoisting cable as previ.

`ously stated is designated HX, the holding line for the clamshell bucketis designated XY Aand the closing line-is desi ated ST. To

prevent turning ofthe clamshell bucket D I utilize the tag line drum JX seen bestv in Figure 16, having a frictionncontrol, and 'a' Atag line KX whichleads from said drum and is secured to one of the jaws of the clamshell bucket D", see Figure 1.- A

The `cable arrangements employed for we dragline bucket equipment andillustrated in Figure 3.in a general way, comprise the cus- 'tomary hoisting cable or line LX and .the dragline MX arranged-with the cables leading ofto the drag drum and hoistingdrums. 'The drums 40 and 41 are equipped with suitable sockets or holes for the steel' sockets which are babbitted on the "ends vof the cables employed with the particular bucket used. .Y When using the dragline bucket the dragline or cable is passed between a couple of horizontal sheaves and two vertical sheaves of the. fair-lead casting NX shown best in Figures 1- and 2, this casting being attached to the platform of the machine between the lower points uoi the bopm.

Frictn clutch friction clutch employed by best The type of me in my crane construction is shown .in Figures 5 and 6,' and comprises an exceed-l `ingly meritorious structure for'crane and ico other uses. The-.clutch is ofthe class known -as' an outside band clutchL/-Asabove premised, the objectionto such clutches heretofore has' involved theunsatisfactory .operation thereof which gives, risetov undue wear.

between the *friction drumv bushingand the shaftlonjwhich it is mounted dueto the pressure of the band in one direction against; said drum. InF the construction of my clutch proceed on the theory of equalizing the pressure of the band means by, causing the pres' exerted in opposite direcbers 21,22, 23, 24, 25, etc.'

Referring to Figures 5 and 6, the clutch drum is designated as OX and may be of any suitable type, being loosely mounted upon a suitable shaft 60. Keyed to the shaft 60 at one side of the drum OX is a spiderl 61 and the clutch mechanism is mountedon this spider.

In some cases if a gear happens to be located adjacent to the drumy OX or-an equivalent drum, I am able to u/se said gear as the supporting means for the parts of the clutch mechanism. The spider 61 is best shown in Figure 6A, and has mounted upon diametrilcally opposite portions thereof toggle levers er.. 62. The levers 62 comprise three arms, a

short arm connected by a spring 63 with an adjacent portion of the spider 61, a longer arm 64 connected by a takeup bolt with an adjacent end of one of the friction band sections 65, and a third arm 66 formed with aball end 67 received by a sectional socket GS'rgnthe'outer end of a toggle link 69. Each toggle link 69 while connected a-t its outer end with the arm 66 offthe adjacent toggle lever is pivoted at its inner end as shown at 7() to an equalizing ring or member 71 which is mounted on a shifting sleeve 72 carrying also a shifting collar 7 3 by which the clutch mechanism may be operated by a shifting lever, the fork of which is not illustrated. Theshifting forkv is adapted to shift the collarf73 'and the sleeve 72 and the ring 71 longi-A tudinally of the shaft 60, in a well known Aso manner. y The rmg 71 1s formed with a collar havmg al centervopening somewhat elongated in the direction of the alignment of the toggle links 69. The purpose of this formation is to enable the ring 71 to shift slightly in the direction of either of theJ` links 69, in the event one of the band sections. should be alittle ftighter than the other. -The equalizing ring gage them with the drum OX. v f

.It will be observed that the band sections 65 are each connectedlat one end with'l the spider and the opposite ends of the band sections are connected with the togglelevers 62 i previously described. The respective ends of the. band sections65 are-opposite Ione another. The pressure means forapplying lthe friction of a particular band section being opposite that co-operating, with the 'other' band section7 so that the pressure incident t0 throwing the clutch into action against the L drum OX is obviously equalized and thereis no tendency to produce wear 1n a single d1- rection only between the'biishing of the drum `and the shaft on which it is supported. yOn

shifting of the ring 71 inwards oi' toward the spider 61, when the shifting' sleeve 7 y2 is opel'- ated, the toggle links 69. tend to straighten f The springs 63 might be dispensed-with, and in fact I have built my clutchvwithoutthem,.

but they are advantageous in effecting a quick normalizing of the toggle levers 62 and release of the band friction which asis Well known has a tendency to stick to the 'drum owing to the suction pull. Also I may ernploy la simple pivotal connection between the K' parts 62 and 69 but the ball and socket connection illustrated is far preferable, owingtd the slight turning tendency of the push on the links 69 respecting the levers 62.

Lever stand for creme A Figures 1 and 2 show in a' general way the arrangement of the' controlling levers at the right forward end of turntablewl and I, might note lthat these various levers designated 72 are connected by various'levers and linkage parts to the dierent clutches and v deem it necessary to detail their arrange-V ment and operationas these will be clearly understood by engineers versed in the use of cranes of the type of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters vPatentfis: l 1 F 1. In a crane of the class described, the combination of a 4body, a boom mounted thereon and means for raising and lowering. said boom, hoist drum mechanism comprising cable operating and hoisting drums mounted upon the body turntable, adapted to actuate intercl'iangeable cable means 'to wind on and off said drums and to be connected with the boom for handling different classes of work, a motor, variable 'speed 'gear'- ing connecting the moton an-d the drum` mechanism,means to render/either or 'both drums operative at will, and control means 'F for the vari able speedv mechanism to vary the speed of vdriving of the drums to accord with Aso from the engine, and control means for theA variable speed means to change the `speed of. action of the drums when changing from one type of cable means to another. X

3. A crane of the class described comprising a boom, hoisting and U drumsadapted to operate, interchangeable 'Herent es of cable and bucket 'equipments forvsaid oom and-drums, and speed varying meansior the drums operable to change the Speed -o thedrums according to the particular cable and bucket equipment being used, and means to control independent operation of the drums.

4. A locomotive .crane such as described, comprising a boom, means for peaking the boom in and out, drum vmechanism including hoisting and drag drums, a prime mover Iori the' drum mechanism, the drum -mechanism kbeing adapted to voperate 'eitherclamshell bucket and cable equipment orinterchangeable .drag-line bucket and cable equipment, and means to transmit variable fmotion from v I. the prime' mover to the drums changeable ac- Vcording to the particular bucketV and cable eqll'fpllflent connected tooaetwith-the drum mechanism. -Y

y 5. A locomotive crane 'such 'as described,`

`f .comprising a boom, l"means for peaking the boom in and-out, drum mechanism including hoisting and dragi'drums adapted tooperateclamshell bucket and cablev equipment, or drag-line bucket and cable equipment, the

drum mechanism being adapted for conneccontrol independent action of the-drums, andV tion with such: equipments without removal or alteration o theY said mechanism, Vmeans vto means to drive the 'drum-mechanism. at different speeds, a particular-speed tofaccord with the particular equipment .beingg used.

6. In a crane Q the class descr1bed',the'

-, combination of a car, a turntable, and aboom Y lowering said boom, hoist drum mechanism" coacting with` the boom for handling 'difiermounted thereon and meansfor raising and ent kinds of cable and bucket tequipments and comprising a plurality of independently operable drums, powerdriven "variable .speed meansfor controlling the saiddrum mechations` leadingfrom the traction means to the -saidvariable speed-means of the 'drum'mechjan'i'sml, fwhereb the traction means may be.

drivel; 'at varia nism', an ngine' adapted to drive .the fi-gele .speed means, traction 'means for ehe-.car Supporting the turntable, and opefatmgconnec-,-

a crane 'of the class described,"the` 'combination of a car, a body, anda boom mounted thereon and means for raising and lowering said boom, hoisting drum 'mechanism connected with the boomfor handling'A different classes of loads, power driven variable speed means for .controlling the said drum mechanism, traction means for the 'car for moving the same to its Work and from place to place, variable speed gearing for driving -the tractio'n means, and connections for communicating motion from the firsty mentioned to the last mentioned variable speed devices; A

8. A crane ojf the class-described comprising aboom, hoisting and drag drums adapted to be used with Vinterchangeable diii'erent types oi 'cable and bucket equipments for said boom and drums, speed varying means for the `drums operable to accommodate the drum action tothe particular cable and bucket l equipment being'used, traction means for the car, and operating connections leading from thev traction means to the said variable speed means of the drum mechanis whereby the 'traction means may be driven at .variable speeds.` Y f 9. In a portableV crane of the 'class described, the combination of a' car comprising a power plant, a hoisting drum mechanism,

a boom carried by the car,'control means and high .and low speed gear devices for connecting the'power mechanism withthe hoisting drum. mechanism, the high and low speed gear deviceslieing adapted to be alternatively put into action to`drive the drum mechanism at either high or low speed, combined with traction devices supporting the car for,

movement, and drive gearing for said traction devices operable from thehigh and low speed gearings for the hoisting drum mechL anism, whereby thetraction mechanism may l be driven at corresponding speedsf'the drive gearing lastn mentioned comprising change 1Speed devices, whereby the traction mechanismrmay be operated through the combina- -hoisting drum mechanism. g 10. In a portable crane, the combination of acar, a; boom, hoisting -drum mechanism on .the'car, c able means connected with the drum tion vaction of said change speed devices and the high and low speed-drive gearing for thex4 mechanism and boom for handling work,-

power mech-anism, means to operate the drumY t mechanism at variable speeds from the' power.me'chanism,traction devices for thejcar, w 'and-change speed means to operate the'trac- .tion/devices from the power mechamsm through the said variable speed means for the drum mechanism.'

l1. In a crane, m combination a car,' a traction support therefor`,\-drum mechanism' "mounted on the carl and'comprising a plurality of drumsadapted ,tov be connected with 130; Y

-clam shellior drag line cable and bucket( equipments, means to control simultaneous or independent operatlon of the drums, an engine, variable speed mechanism intermediate the engine and said drum mechanism, separate' traction devices On the traction support, and

means to actuate said traction devices from lhoisting cable relatively to the car, the operating means for said roof door including a shackle connected with the car and about which the hoisting cab e operates, and interlocking means between said shackle and the roof door for shifting the door upwardly and downwardly according as the hoisting cable p of the boom is moved upwardly and downwardly in peaking the boom in and out.

13. Means substantially as claimed in claim 12 wherein the interlocking means comprises brackets projecting upwardly from said shackle, and channel members interlockinglyl engaging said brackets and carried bythe--I roof door.

14. Means substantially as claimed in claim 12 wherein the interlocking means comprises brackets n projecting upwardly from said shackle, and channel members interlockingly engaging said brackets and carried by the roof doer, the interlocking portions of the channel members and brackets including rollers rotative on the brackets and forming anti-fric tion bearings intermediate the channel members and the brackets. L v f e l 15. In a crane of the `class described, the

combination of a car, a boom mounted there on, hoist drum mechanism comprising drums mounted upon the car, to be used with differ# ,ent kinds of cable means to wind on and oil' 0 combinatlon, a car,`an englneuthereon, 'drlve 110 said drums' and adapted to be connected with the boom for handling different classes of work, means to control independent and simultaneous operation of the drums, a motor, variable speed gearing connecting the motor and the drum mechanism, and control means for the variable speed mechanism to vary the speedfof driving of the drums to accord with the particular kind of cable means used for work being handled by said boom and cable means.

16. In a crane, in combination, a car, a tracy tion. support therefor, an engine on the car, drum mechanism on the car comprising independently controllable hoisting and drag drums adapted to operate a drag line cable and bucketequipment, and also adapted to operatethe hoisting and holding linesof clam shell bucket equipment, and means for driving the said drums slowly from said engine lwhenflthe drag line bucket equipment 1s ap-f plied to said drums, and driving said drum mechanism at required high speed when said L drum mechanism is being used in connectionv with the clam shell bucket equipment.

17.'In a crane, in combination a' car, am

traction support therefor, car, drum mechanism on ing separately hoisting and an engine'onithe the car comprisand simultaneously operable drag drums adapted to operate f a drag line cable and bucket equipment, and

also adapted to operate the hoisting and holding lines of clam shell bucket equipment, means for ldriving the said drums slowly from said engine when the'drag line bucket equipment is applied to said drums, and drivi lng said drum mechanism at required high speed lwhen said -drum mechanism isbeing used in connection equipment, the traction support comprising traction devices, and the slow and high speed actions of the engine, as above mentioned, to said traction devices.K 18. In a crane, in combination a car, a traction support therefor, an engine on the car, drum mechanism on the car comprising hoisting and drag drums adapted to operate a drag line cable and bucket equipment, and also adapted to operate the hoisting and holding lines of clam shell bucket equip- Mment, means for driving the said drumsl 95 slowly from said engine when the drag line bucket equipment is applied to said drums,

and driving said drum mechanism at required high speed when said drum mechanism is being used in connectiomwith the 10o clam shell bucket equipment, the traction i support comprising traction devices and means for transmitting the slow and vhigh speed actions of theL engine, as above mentioned to said traction slow speed action of one traction device and a high speed action of lthe other, or vice versa.

19. In a lcrane of the class described in ments, a change speed'op'erating mechanism 115 mounted upon lthe car to drive the drum mechanism from the engine, the car compris-- ing a turntable on which the engine and drum mechanism aremounted, together with driving means for transmitting the different '120 speeds of the change speed mechanism/'on vthe turntable aforesaid ato' the *supporting traction devices for the purposedescr/ibed, and means for applying. the speed actiori transmitted to the traction devices/in different 1,25 I' ways. to effect steering and straight progressive ymotion vices. 1

20. In aA crane ofthe class described in combination, a.V traction base, a car compris-l 1.30

with the clam shell bucket means for transmitting 85 devices to effect a 'operations of said traction de- J 

